METHOD FOR PRODUCING A POROUS SINTERED MAGNESIA, BATCH FOR PRODUCING A COARSE CERAMIC REFRACTORY PRODUCT HAVING A GRANULAR MATERIAL MADE OF THE SINTERED MAGNESIA, SUCH A PRODUCT AND METHOD FOR ITS PRODUCTION, LINING OF AN INDUSTRIAL FURNACE, AND INDUSTRIAL FURNACE

摘要

The present invention relates to a method for producing a granular materialfrom sintered magnesia, the sintered magnesia being produced by sintering ofpressed articles, in particular pellets, from MgO powder, preferably fromcaustic MgO powder, and subsequent mechanical comminution of the pressedarticles, the sintering being carried out in such a way that the granularmaterialhas a grain porosity (total porosity), according to DIN EN 993-1:1195-04 andDIN EN 993-18:1999-01, of from 15 to 38 vol%, preferably 20 to 38 vol%, andto a batch for producing a coarse ceramic, refractory, shaped or unshapedproduct containing the porous sintered magnesia, to such a product producedfrom the batch and to a method for its production, to a lining, in particularaworking casing and/or a backing, of a large-volume industrial furnace, thelining, in particular the working casing and/or the backing, having at leastonesuch product, as well as to such an industrial furnace.